Gkain



(No Model.)

H. E. CASGRAIN.

AGETYLENE- GAS GENERATING LAMP.

` Patented Jan. 5.1897.

Hznr Edmond Cagran, me/whoa 5513 @Howl/w @Xwcmoeo #WAL UNITED STATES PATENT OFFICE.

HENRI EDMOND OASGRAIN, OF QUEBEC, CANADA.

ACETYLENE-GAS-GENERATING LAMP.

SPECIFICATION forming pait o f -Letters Patent No. 574,601, dated January 5, 1897.

l Application filed May 20, 1896. Serial No. 592,284. (No model.)

of Quebec and Province of Quebec, Canada,

have invented certain new and useful Improvements in Lamps for Generating and Burning Acetylene Gas; and I do hereby de-v clare the following to be a full, clear, and ex- Io act description of the invention, such as will o expose its internal parts.

enable others skilled in the art to which it appertains to make and use the same. p

This invention relates to lamps for generating and burning acetylene gas; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure l is a side view of the lamp with portions of it broken away to Fig. 2 is a vertical section taken on the line x .fr in Fig. 1. Fig. 3 is a sectional plan View from above taken on the line y y inv Fig. 1. Figs. 4, 5,-aud 6 are detail side, sectional, and plan views of 2 5 the regulating-screw.

A is an external vessel partially filled with water a. B is a cylinder having an open bottom.

B is the cover of the cylinder, secured to 3o its top and resting on the neck of the vessel A.

The cover B' is provided with air-holes b, communicating with the interior of the vessel A, and b are distance-pieces secured to the cylinder and holding it centrally in the neck of the vessel A.

C is the gas-pipe,projecting upwardly from the center of the cover B', and cis the tip or burner, where the gas is ignited.

C is a coil formed in the gas-pipe between 4o the cover and the tip.` D is a chamber surrounding the said coil and adapted to contain water.

D' is a funnel for filling the chamber witl water, and d is the overiow-pipe.

The water in the chamber D condenses the aqueous vapors in the coil, so that they do not pass upward to the tip.

E is a cylindrical vessel for holding the carbid of calcium e, and e is the lime resulting 5o from the decomposition of thecarbid.

The vessel E is supported within the cylin der B by springs E', secured to the side of the vessel E and pressing against the sides of the cylinder B.

F is a perforated pipe projecting upwardly within the vessel E, and j' is a regulatingscrew for permitting the water in the vessel A to pass in a small regulated quantity upward into the pipe F, and thence through its perforations f into the vessel E.

The lowest part of the vessel E is arranged so that it is always above the open lower end of the cylinder B.

G is a drip-catcher at the top of the vessel E and under the gas-pipe. The drip-catcher is arch-shapedl in form and has a concave upper surface. The ends of the drip-catcher are secured to the opposite sides of the vessel E, leaving spaces or openings on each side for the passage of gas from the vessel E to the gas-pipe. This drip-catcher prevents any water formed in the gas-pipeV from dripping into the vessel E.

The regulating-screw fis provided with a wedge-shaped slot g in one side of it, and the passage of water to the carbid is regulated by turning the screw f.

l-I is a valve in the upper part of the gaspi pe for regulating the flow of gas to the tip.

The water decomposes the carbid when brought in contact with it, and acetylene gas is formed. When the valve II is closed, the gas accumulates in the vessel E and cylinder B, and its pressure forces the water in the cylinder B downward. When the level of the water in the cylinder is forced below the lowest perforation which communicates with the carbid, the supply of water to the carbid is cut off and the formation of gas ceases.

When the valve H is opened, the gas can be ignited at the tip and will burn until the supply of carbid is exhausted. l

IVhat I claim isl. In a lamp, the combination, with an outer vessel for holding water, of a cylinder open at the bottom and provided with means for regulating the passage of gas from its upper part, said cylinder being supported in the said vessel, and a vessel for holding carbid of calcium supported in the said cylinder and provided with an upwardly-projecting perforated pipe having a valve at its lower part IOO for permitting the Water to enter in preztrjeetiug perforated pipe, and a regulatingrauged quantity to uct upon the carbid, subscrew provided with a Wedge-shaped groove stmitiztlly as set forth. and controlling the passage of Water to the 2. In a lamp,theeo1ubiuatio1i,\vith an outer carbid, substantially as set forth. 5 vessel for holding water, of at cylinder pro- In testimony whereofl I affix my signature i5 vided with u cover and a guspipe it its upper in presence of two Witnesses. end and supported in the said outer vessel, HENRI EDMOND CASGRAIN. :t vessel for holding carbid of calcium sup- \iti1esses: ported above the open bottom of the said Cyl- THOMAS CASAULT,

Io inder and provided with un upWu-idly-pro- Ji. G. DRULLET. 

